1. What is the formula for angular momentum? 2. What does "conservation of angular momentum" mean? 3. What criteria are necessary for angular momentum to be conserved? 4. Drag the disk so that it rotates about once every two seconds (this does not need to be exact, but you should time it so that you know how long it takes. Use the "0 = 0" line on the right side of the disk as a reference point). 5. Calculate the rotational speed of the disk in radians/sec. To do so: a. Remember that one revolution of the disk corresponds to 2n radians, so in - 7 tim b. To be very precise, you can let the disk rotate five times and measure how long this takes, then divide this by five to get the average time. 6. While the disk is still rotating reduce the mass of the platform from 0.12kg (where it started) to 0.1kg. Recalculate the angular speed 07 7. Repeat step 6 for other masses to complete the table below: Platform mass (9) Time per revolution (sec) Angular speed (Tradeec) 0.04 0.06 0.08 0.10 0.12 0.14 0.16 3. Reset the platform mass to 0.1kg 9. Increase the inner radius from 0.0m to 4.0m in steps of 1.0m 10. What happens to the angular speed as the inner radius increases? Why? 11. Complete the following chart for the changing inner radii: Immer Radius (m) Time per revolution Angular speed OF Calculated (Bec) (rad/gec) Rotational Inertia (ke'm ?) 0_0 1.0 2.0 3.0 4.0 12. Do the date in the table for part 7 above show conservation of angular momentum? Defend your answer. 13. Do the date in the table for part 11 above show conservation of angular momentum? Defend your